Photophysical properties in aqueous solutions of C 60 embedded in 2:1 γ-cyclodextrin/[60]fullerene inclusion complexes

Quaranta, Annamaria; Qu, Huanhuan; Vencel, Thomas; Zhang, Yongmin; Leibl, Winfried; Leach, Sydney; Bensasson, René V.

doi:10.1016/j.cplett.2014.09.046

Cited by 3 publications

(4 citation statements)

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“…Because its half-life (3.1 μs; Figure B) is different from the C 60 triplet lifetime (45 μs in toluene), the TA band is attributed to C 60 •– . Meanwhile, no positive signals were detected in this region or the time scale without C 60 .…”

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confidence: 95%

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Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Sachith

Okamoto

Ghimire

et al. 2021

J. Phys. Chem. Lett.

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Interfacial electron transfer across perovskite-electron acceptor heterojunctions plays a significant role in the power-conversion efficiency of perovskite solar cells. Thus, electron donor−acceptor thin films of halide perovskite nanocrystals receive considerable attention. Nevertheless, understanding and optimizing distance-and thickness-dependent electron transfer in perovskite-electron acceptor heterojunctions are important. We reveal the distance-dependent and diffusion-controlled interfacial electron transfer across donor−acceptor heterojunction films formed by formamidinium or cesium lead bromide (FAPbBr 3 /CsPbBr 3 ) perovskite nanocrystals with TiO 2 /C 60 . Self-assembled nanocrystal films prepared from FAPbBr 3 show a longer photoluminescence lifetime than a solution, showing a long-range carrier migration. The acceptors quench the photoluminescence intensity but not the lifetime in a solution, revealing a static electron transfer. Conversely, the electron transfer in the films changes from dynamic to static by moving toward the donor−acceptor interface. While radiative recombination dominates the electron transfer at 800 μm or farther, the acceptors scavenge the photogenerated carriers within 100 μm. This research highlights the significance of interfacial electron transfer in perovskite films.

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confidence: 95%

“…980 nm (Figure 3A). 49 Because its half-life (3.1 μs; Figure 3B) is different from the C 60 triplet lifetime (45 μs in toluene), 53 the TA band is attributed to C 60…”

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confidence: 97%

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Sachith

Okamoto

Ghimire

et al. 2021

J. Phys. Chem. Lett.

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“…In parallel, turning to much larger molecules, there are more than 35 publications involving fullerene-related species, where fullerene itself was the brainchild of his old friend Harry Kroto (FRS 1990) (among others). The most recent work involved laser flash photolysis and the photophysical properties of triplet C 60 in solution in cyclodextrin, showing how the triplet state is identical to that in C 60 in toluene solution (29). These and many other publications illustrated how far Sydney had moved in applying his knowledge beyond that of his roots in classical spectroscopy.…”

Section: Symphony Of the Stars: L'observatoire De Meudon 1993-2019mentioning

confidence: 99%

Sydney Leach. 11 April 1924—24 December 2019

Field

Simons²,

Cockell

2020

Biogr. Mems Fell. R. Soc.

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Sydney Leach will be remembered as an outstanding and inspirational scientist, an irreplaceable friend to many—artists and musicians as well as academic colleagues. He encouraged and influenced numerous scientists as a mentor. After graduating from King's College London and carrying out war work at Farnborough, he spent all his scientific life based in Paris, working principally at Orsay and, in his later years, at the Observatoire de Paris–Meudon. Sydney was a major influence in establishing chemical physics in France after World War II, founding the highly influential Laboratoire de Photophysique Moléculaire (LPPM) at Orsay, where much of his pioneering work was performed. The ‘Sydney lab’ lives on in the newly created Institut des Sciences Moléculaires d'Orsay. Early experiments often took place at the synchrotron source (ACO, Super-ACO), just a few hundred yards from LPPM. He was a pioneering advocate of synchrotron radiation, and a driving force for its use in spectroscopy and photodynamics, along with free-electron lasers, supersonic jets, coincidence spectroscopy and matrix isolation—techniques that were applied and refined over decades and used to explore fundamental processes such as photoionization, vibronic coupling and radiationless transitions. Sydney's seminal studies of polyatomic molecular ions led him towards fresh horizons in planetary atmospheric and space science. His work opened new vistas in cometary spectroscopy, polycyclic aromatic hydrocarbons, fullerenes and their possible roles in the chemistry of the interstellar medium and, finally, biologically relevant species, helping to instigate the newly developing subject of astrobiology—a perfect example of his sustained prescience in the world of science.

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“…[48][49][50][51] However, these examples occurring at the absence of solvent will not be included. C 60 is also known to form supramolecular structures in solutions with some hosts such as calixarene, 52,53 cyclodextrin [54][55][56] and porphyrins. [57][58][59] In colloid and interface science, manipulation of the aggregation of some charged C 60 derivatives by surfactants has also been reported.…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of fullerene C₆₀-based amphiphiles in solutions

Chen

Zhou

et al. 2022

Chem. Soc. Rev.

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Photophysical properties in aqueous solutions of C 60 embedded in 2:1 γ-cyclodextrin/[60]fullerene inclusion complexes

Cited by 3 publications

References 20 publications

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Sydney Leach. 11 April 1924—24 December 2019

Self-assembly of fullerene C₆₀-based amphiphiles in solutions

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Photophysical properties in aqueous solutions of C 60 embedded in 2:1 γ-cyclodextrin/[60]fullerene inclusion complexes

Cited by 3 publications

References 20 publications

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C60 and Halide Perovskite-TiO2 Donor–Acceptor Films

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C60 and Halide Perovskite-TiO2 Donor–Acceptor Films

Sydney Leach. 11 April 1924—24 December 2019

Self-assembly of fullerene C60-based amphiphiles in solutions

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Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Long-Range Interfacial Charge Carrier Trapping in Halide Perovskite-C₆₀ and Halide Perovskite-TiO₂ Donor–Acceptor Films

Self-assembly of fullerene C₆₀-based amphiphiles in solutions